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本文阐述了在上海地区青紫泥土壤种植单季晚稻，施用长效碳铵的优越性。实验室模拟试验和田间试验结果表明，表施和混施长效碳铵较普通碳铵可在一定程度上减少氨的挥发损失；长效碳铵有一定的硝化抑制作用；长效碳铵比经验施肥量减少１９５ｋｇ／ｈｍ２时，水稻产量不下降；采用二次曲线校正方程ｙ＝ａ＋ｂｘｋ＋ｃｘ２ｋ，能更准确地模拟碳铵肥料效应特征，对长效碳铵取Ｋ＝１．１，对普通碳铵取Ｋ＝１．２，在达到基本一致的最高产量时，长效碳铵的每公顷施用量比普通碳铵节省约７０ｋｇ
This article describes the superiority of long-acting ammonium bicarbonate application in the cultivation of single-cropped late rice in Qing Zi soil in Shanghai. Laboratory simulation tests and field test results show that the surface application and mixing of long-acting ammonium bicarbonate can reduce ammonia volatilization loss to a certain extent compared with ordinary ammonium bicarbonate; long-acting ammonium bicarbonate has certain nitrification inhibiting effect; When the amount of 195kg / hm2 was decreased, the yield of rice did not decrease. Using quadratic curve correction equation y = a + bxk + cx2k, the effect of ammonium bicarbonate fertilizer could be simulated more accurately. K = 1.1 for long- K = 1.2, at a substantially uniform maximum yield, the application of long-acting ammonium bicarbonate per hectare saves about 70 kg